Centrifugal ore-separator.



Patented July 17, 1900.

A. DASCUNAGUERRE. CENTRIFUGAL ORE SEPARATOR.

(Application filed 13120.22, 1897.

(No Model.)

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NiTnD STATES PATENT FFICE.

ARTHUR DASOONAGUERRE, OF MEXICO, MEXICO.

CENTRIF UGAL ORE-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 653.792, dated July 1'7, 1900. Application filed December 22, 1897. Serial No.663,005. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR DASCONA- GUERRE,a citizen of the Republic of France, residing at the city of Mexico, Mexico, have invented a new and useful Centrifugal Ore- Separator, of which the following is a specification.

My invention is an improved centrifugal ore concentrator and separator, the object of my invention being to provide a simple and highly-efiicient machine for concentrating dry pulverized ore containing different metals centrifugally and by subjecting the same in its treatment by the machine to the action of a blast of air, which effectually winnows the lighter worthless earthy particles of the ore from the heavier valuable metalliferous particles thereof and separates the various metalliferous particles of the ore centrifugally by specific gravity, thereby greatly lessening the cost of reducing the ore and enabling ores of low grade to be profitably mined and reduced.

To these ends my invention consists in a revolving working surface havinga deflecting portion and a plane outer portion in which are sun ken tangentially-disposed grooves, whereby plane lands are formed on said outer portion between said grooves and a hood disposed in proximity to said working surface, but above and out of contact therewith and conforming in its proximate side substantially to the profile of said working surface to form an air and ore passage between the said working surface above the walls of the grooves and below the said hood.

My invention further consists in a variablespeed mechanism by which myimproved centrifugal ore concentrator and separator may be revolved at the requisite speed.

In the accompanying drawings, Figure 1 is an elevation of my improved centrifugal ore concentrator and separator. Fig. 2 is a plan View of the same with the upper casing, forming the hood, partly broken away to disclose the construction of the workin g face of the rev oluble concentrating and distributing disk. Fig. 3 is a detail sectional view of a portion of the speed apparatus. Fig. 4: is a detailed section, on an enlarged scale, of a portion of the disk and hood, showing the grooves below the plane surface of the disk and showing the air-passage between the hood and the disk and above the walls of said grooves.

In the form of my invention illustrated herein, 1 represents a disk designed to be rotated at a high rate of speed and is herein shown as being circular in form. This disk has the working surface comprising the central substantially-conical deflector 2 and a plane horizontally-disposed outer portion 3, surrounding said deflector, which outer portion is provided with a series of tangentiallydisposed grooves a, sunken below the surface, and thereby forming plane lands b between said tangentially-disposed grooves. Said grooves are approximately tangential to the base of the conical deflector.

An upper casing or hood 8 is disposed upon the centrifugal disk and forms a feed-hopper and air-funnel 9 around the deflector 2, and said hood is disposed in proximity to the working surface of the disk, but out of contact therewith, and conforms in its proximate side substantially to the profile of the working surface of the disk, thereby forming a centrifugalair and ore passage 0 between said hood and the working surface of the disk. The said air-passage c is above the walls of the grooves sunken below the surface of the disk. This hood is fastened to the disk in any suitable manner at suitably-spaced intervals. In practice I prefer to make the disk with a working surface of copper and to employ a weight in the form of a ring or annulus 35, bolted to its under side, as here shown,,and function of this weight ring or annulus being to cause the disk to rotate uniformly and steadily'when power is applied thereto.

As here shown, the disk is provided with a central depending hub-sleeve i to receive the upper end of a vertical shaft 5, which may be keyed thereto or secured by a bolt 7. The lower end of the vertical driving-shaft 5 is stepped in a bearing 11 on the bed 12, on which is bolted an arched frame 13, that has a central bearing ll for the shaft 5. The frame is further provided with a horizontal bearing 15, in which is journaled a powershaft 16, having fast and loose driving pulleys 17 18 on its outer portion for a suitable driving-belt operated by any suitable source of power. The inner end of the power-shaft 16 is provided with a friction-disk 19, which is keyed or otherwise firmly secured thereto, which friction-disk is engaged by a frictionpulley 20 on the shaft 5. Said friction-pulley is splined on the shaft 5, and hence rotates therewith and is adapted to be shifted on said shaft toward and from the axis of the friction-disk to vary the speed of said shaft 5, as will be readily understood. The friction-pulley has the friction-surface 21, of leather or other suitable material, in the form of a band secured in an annular groove in said pulley. The upperend of the frictionpulley has an annular groove 22, engaged by the fork-arm 24 of a traveling adjusting-nut 25, which works vertically on a screw-shaft 26, which has its lower end supported in a bearing 27 in the bed and is journaled near its upper portion in a bearing 28 in the arched frame. The said screw-shaft has a suitable hand-wheel at its upper end, by which it may be rotated in order to vary the speed of the concentrating and separating disk.

The operation of my invention is as follows: A disk 1, with its hood, being rotated at a high rate of speed, the tangentially-disposed grooves in the outer portion of the working surface of the disk create a blast of air which is drawn inward through the hopper 0 and passes outward through the air-passage c between the working surface of the disk and the lower side of the hood and above the walls of the grooves, the strength of this blast increasing or decreasingas the speed of the disk is raised or lowered. The ore to be treated 'isfed in a dry pulverized condition into the hopper and air-funnel 9, as from a suitable chute 10, and as it falls upon the deflector 2 tangential grooves and outwardly in the tangential grooves, the earthy particles of the ore being subjected throughout their entire passage over the working surface of the disk the tendency of the heavier metalliferous particles of the ore is to drop into the tangential grooves, the said metalliferous particles beint, thus concentrated and received in the said tangential grooves, through which they pass and from which they are thrown by centrifugal force into the air, where the difierent metalliferous particles separate by specifiegravity and become disposed in concentric circles around the ore separator and concentrator.

As shown in Fig. 1, it is desirable to provide a floor or table 30 to receive the concentrated and separated ore and to provide the table or fioorwith a series of concentricallydisposed annular troughs 31 to receive'the diderent ores classified and separatedby the machine, and said annular troughs should.

have openings 32, through which the ores may be caused to pass into suitable binsor receptacles. Having thus described my invention, I claim- A centrifugal ore separator and concentrator, comprising the revolving working surface, having the central deflec'tingportion 2, and the plane outer portion 3, in which are sunken tangentially disposed grooves a,

thereby forming plane lands b on said outer portion between said grooves; and the hood, having the inlet, and disposed in proximity to said working surface, but out of contact therewith, and conforming in'its proximate side, substantially to the profile of said working surface, and thereby forming a centrifugal air-passage 0 above the walls of the grooves for the blast of air induced by the tangentially-disposed grooves, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto 'affixed mysignature in the presence of two witnesses.

ARTHUR DASCONAGUERRE.

Witnesses:

CHARLES MERrE-N, H. W. SAGAZEI. 

